TL431BIDMR2

Product Overview

Category

The TL431BIDMR2 belongs to the category of voltage references.

Use

It is commonly used as a precision shunt regulator in various electronic circuits.

Characteristics

• Provides a stable reference voltage for precise voltage regulation.
• Offers high accuracy and low temperature coefficient.
• Operates over a wide temperature range.
• Can be easily integrated into different circuit designs.

Package

The TL431BIDMR2 comes in a small outline package (SOT-23) which allows for easy mounting on printed circuit boards.

Essence

The essence of TL431BIDMR2 lies in its ability to maintain a constant voltage reference, ensuring accurate and reliable performance in electronic systems.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a specific quantity of TL431BIDMR2 units.

Specifications

• Reference Voltage: 2.5V
• Operating Temperature Range: -40°C to +85°C
• Output Current: Up to 100mA
• Reference Voltage Tolerance: ±1%
• Cathode Current: 1mA to 100mA

Detailed Pin Configuration

The TL431BIDMR2 has three pins:

1. Anode (A): Connected to the positive supply voltage.
2. Cathode (C): Connected to the load or ground.
3. Reference (R): Provides the stable reference voltage.

Functional Features

• Precise voltage regulation: The TL431BIDMR2 ensures a stable output voltage regardless of input variations.
• Adjustable output voltage: By connecting external resistors, the output voltage can be adjusted to meet specific requirements.
• Low power consumption: The device operates with low quiescent current, making it suitable for battery-powered applications.
• Short-circuit protection: It incorporates internal current limiting to protect against short circuits.

Advantages and Disadvantages

Advantages

• High accuracy and stability.
• Wide operating temperature range.
• Easy integration into various circuit designs.
• Adjustable output voltage.

Disadvantages

• Limited output current capability.
• Requires external resistors for precise voltage adjustment.

Working Principles

The TL431BIDMR2 operates based on the principle of a shunt regulator. It compares the reference voltage at the Reference (R) pin with the voltage across the load connected to the Cathode (C) pin. By adjusting the current flowing through the device, it maintains a constant voltage drop across the load, ensuring accurate regulation.

Detailed Application Field Plans

The TL431BIDMR2 finds applications in various fields, including:

1. Power supplies: It is used to regulate the output voltage of power supply circuits, ensuring stable and reliable operation.
2. Battery charging systems: The TL431BIDMR2 helps maintain a constant charging voltage, preventing overcharging or undercharging of batteries.
3. Voltage references: It serves as a precise voltage reference in measurement and calibration equipment.
4. Audio amplifiers: It can be employed to stabilize the bias voltage in audio amplifier circuits, improving overall performance.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the TL431BIDMR2 include:

1. LM4040: A precision voltage reference with adjustable output voltage and low temperature coefficient.
2. REF3030: A high-precision voltage reference with low dropout voltage and excellent line regulation.
3. LT1236: A micropower precision shunt voltage reference with low quiescent current and high accuracy.

These alternative models provide options for designers based on specific requirements and constraints.

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